Trimmer and filer for saws.



J. E. NORMAN.

TRIMMER AND HLER FOR SAWS.-

APPLlCATION FILED OCT- 4, i9l5.

Patented Mar. 27, 1917.

TTORNEYS.

RM mx W V! B 2 H m .3 F 0 n8.

' WITNESSES:

"eiertreh eeerezerr ll lllrhlhl.

JAMES EiNGRI'IAN, GI" ADTDICKS, TEXAS.

AND FILER FOB, SAWS.

Specification of Letters Patent.

1 fizilyi fhfi Application To all whom it may conccm: e it knows that 1, JAMES E. a. citizen of the United States, residing" at Addicks, in the county of Harris and State of Texas, have invented certain new and useful lmproven'ienls ,in Trimmers and llilersfor Saws, of which the following is a specification.

his invention relates to newend useful improvements in'e trimmer and filer for saws, and. is particularly designedfor trimming and filing gin sews. The object of the invention is to provide a. device of the character described whereby the sews of ihe ordinary gin may be easily trimmed and filed. the saw teeth being fed automatically as the operation. of trimming.

and filing proceeds.

Another ohjeci; of the invention resides in the provision of a mechanism whereby an oscillatory or twisting motion will be imported to the files as they are applied to the saw teeth.

A. further object of in the provision of a vice of the character described and one which can be easily operated and kept in the invention resides repair. With the above and other ()lljGClLS m View the inrenimu has 'miiticulm' relation to certain novel features of construction, operation, and arrangements of parts an example of which is given in this specification and illustrated in the aceoiupuuying drmvingg, wherein Figure 1 is a plan view o1 l'hedcvice.

Fig? 2 ism side elevation thereof. portly broken away.

Fig. 3 shows a side view of the actuating mechanism for the trimmer knife.

:Fig. 4 shows an isometric view of onc'ol the connecting pitmen employed.

Fig. 5 is a sectional view taken outhe lino 5-5 of Fig. I, and

Fig. 6 is a l'lclSpecfivo View of the trier mer (worming mechanism.

Referring now more pzn'liculurly to the drawing wherein like no designate similar parts; in um-h of thefigures .l;he numeral 1 refers to the frame Wheroou the operative mechanism ol" the dovlce is mounted. Rotatnhly mounted in euibdhlc hearings near the top end of the frame is the drive shaft 2 to one cud o1"- whi h'ie secured the crank 3 and to the other end simple inexpensive dc lower ends of lhe slm'l fis ll morals of reference lion will he lm Patented Mar. 27.1917.

exec fictober 4, H15. Serial No. 53,908.

.15 11.6 justnbly mounted upon the frameland slidalrlly mounted in these hearings are. the respective file shafts 7.], 11, which are piv otully connected to the pihneu ll, 9. It will he observed from an inspec-lion of Fig. 4 that the respective ends of the pllmzln 9 are bent at rightzmg'les to the llflllj. thereof hut said ovmturned ends are not in parallel relation giving: in effect a twisted shape, one .end of said pitmzm living pivoted to the disk 8 and the other to theond of the COI'I'GSPOIKllUfg shall". 1] with the result that as the shafts ll, '11 are reeiprocuted through said pitmorl an oscillatory or twisting mopm'lcd in said slm'l'ls audio" rorola v. ln act-Hill necessary to also the files 12,

, l2 driven l;l operation it. may

he Found turn ll 2 adja ent ends ill each of the -Shafts accentuate this oscillator movement of the files. The files 12, 19, heretofore referred to may l)(- scour-ml to tho ll in any up- The lower end of the frame forming in. ellm'l a bean mg 123, one side on" which is: mlllod out forinlug a recess or .u'oi'vh wherein rest the dies H and T5 secured in place by a wcdg shaped hollif which in turn is: secured in position by moons: of the out '1'? threaded onto the projecting end thereof.- The upper end of the die 1:? is howled oi'l' forming. with the (lie ll 1! tapering nolx'l) through which the trhnmer knife l8 rooiproeutcs. This knife is secured 'to one end of the him 19 which is photed. to the lower end of the frame 1 juslr uhovo the hearing 13, by means of ("he llflll 20 which passes through sold lmr and the l'rzuno l. The end of said lmll adjacent the knife l3 is threaded to receive lvho nut 21 which when screwed thereon secures Hold knife in position lietweon. the bolt and the shoulder 22 of the lmr '19. The onto-rend of lhe lunlll is connected to the disk 4 by means of lhe liul: 33, which hash pillotal connection will said lmr and an eccentric pivotal ('omioullon with soiddislc ficcured lo opposile .-fl llf.- of the lower end of the 11. ll in order to proved manner. ll IS notched down frame are the supporting legs 2a, 2&, whose free ends are bifurcated, forming the arcuate fingers Q5, 25, which rest upon the shafting 26 v whereon the gin saws are mounted. A Ushaped bolt 27 is pivoted to the side of the frame 1 in alinement with the shaft '2 and fixed upon said shaft is a cam 28 which plays between the arms of said bolts and reciprocates the same back and forth as said shaft is rotated. To the free end of one of the arms of said bolt the upper end of the rod 29 is pivoted, said pivoted end being adjustable by means of the nuts 30, 30. This rod plays through a bearing 31 upstanding from the frame 1 and its forward end is notched to engage with the teeth of the saw successively, during the operation of sharpening same.

In operation the device when applied to the saw to be sharpened stands in a vertical position as shown, being supported upon the legs 2i, 2i which in turn are supported by the saw shafts 9.6. \Vhen the shaft 2 is rotated through the crank 3 a reciprocating movement will be imparted to the files 12, 12 through the mechanism just described. The bearings 10, 10 converge toward the saw and the files cross each other as illustrated in Fig. 2, the saw tooth being operated upon resting up close between said files. The twisting movement imparted to the files through the mechanism heretofore described operates to file off the saw teeth to a needle point, which is necessary for saws of this character. The rim of the saw being operated upon rests against the side of the hearing 13 and between the successive partial rotations of the saw it is at rest, the notch between the dies 14, and 15 being in alinement with the throat between the saw teeth. The rotation of the shaft 2 also operates to rotate the dish l and to reciprocate the bar 19 and the trimmer knife 18 carried thereby, said knife passing through said throat andtrinnning the same to a perfect form. The operation of this knife being uniform the said dies in position,

throats between the teeth will be trimmed uniformly leaving the teeth uniform in length and. shape and preparing them for the filing as above described.

As the shaft 2 rotates the cam 28 operates to reciprocate the U-bolt 27, which, through the operation of the rod 29 will impart partial rotations to the saw successively thus bringing the teeth one at a time in position to be operated upon first by the trimmer knife and then by the files.

\Vhat I claim is:-

1. In a device of the character a frame, one end of which is formed into a bearing having a counter sunk seat, a pair of dies in said seat, one of which is beveled forming a notch between said dies, a wedge shaped bolt locking said dies in position, a trimmer blade pivoted to the frame and arranged to reciprocate through said notch and means for reciprocating said blade.

'2. In a device of the character described a. frame, one end of which is formed into a bearing having a seat, a pair of dies in said seat, one of which is beveled forming a notch between said dies, means for locking a trimmer blade pivoted to the frame and arranged to geciprocate through said notch and means for reciprocating said blade. 1

3. Ina trimmer and filer for saws, a frame, a transverse shaft rotatably mounted thereon, a means for rotating the shaft, a cam fixed to said shaft, a reciprocating member pivoted to the frame, a feed rod one end of which is pivoted to said member and the other end of which is adapted to engage successively against the teeth of the saw, said member being arranged to be engage alternatively by described said cam as it rotates whereby the feed rod is operated to feed the saw.

In testimony whereof I have signed my name to this specification.

JAMES E. NORMAN. 

